CN207111056U - A kind of pressure-controlled screen hookup - Google Patents
A kind of pressure-controlled screen hookup Download PDFInfo
- Publication number
- CN207111056U CN207111056U CN201721122572.2U CN201721122572U CN207111056U CN 207111056 U CN207111056 U CN 207111056U CN 201721122572 U CN201721122572 U CN 201721122572U CN 207111056 U CN207111056 U CN 207111056U
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- screen casing
- screen
- inner tube
- outer tube
- pressure
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Abstract
It the utility model is related to a kind of pressure-controlled screen hookup；Belong to acid fracturing and mechanical sand control screen technology field.It is made up of outer tube, screen casing, inner tube, top connection and lower contact, and screen casing is movably installed with the outer tube between top connection and lower contact, and liquid stream gap is provided between screen casing and outer tube；The termination of screen casing is equipped with sieve tube ball seat by screen casing fixator；Inner tube is movably installed with screen casing；The termination of inner tube is equipped with inner tube ball seat by interior tube fixer.The device is by putting into the pressure break ball of corresponding specification so that inner tube and screen casing are moved accordingly by rail groove, are realized that acid fracturing is combined with oil recovery machiner sand control, are reduced the time of oil gas well mining, improve drilling efficiency；Layering or segmentation production can not be realized by solving existing sand control screen, caused the production fluid water content of oil well to raise, influenceed the problem of other oil reservoirs normally produce, have positive dissemination.
Description
Technical field
It the utility model is related to a kind of pressure-controlled screen hookup；Belong to acid fracturing and mechanical sand control screen technology field.
Background technology
The completion mode used when being exploited to oil gas field includes：Perforation completion method, hole completion method, liner-type well completion
Method, gravel packer completion method etc..Wherein perforation completion method use is the most extensive, the typically first tripping in production string of perforation completion method,
Perforation processing is carried out to production layer after well cementation, after taking out oil reservoir instrument, tripping in sand control screen underground carries out sand control processing；With oil
Field exploitation deepens continuously, and existing sand control screen is in the application of oil well, particularly in multiple zone sand control screen or horizontal well
During section sand control, it is impossible to layering or the flowing of piecewise control production fluid, it is impossible to realize layering or segmentation production, cause oil well
After producing a period of time after sand control, the production fluid water content rise of oil well, the normal production of other oil reservoirs will be influenceed.
The content of the invention
The purpose of this utility model is：A kind of pressure-controlled sieve that acid fracturing is combined with oil recovery machiner sand control is provided
Pipe, and application track slot structure realizes the layering or segmentation to producing layer, reaches control water by the pressure break ball for putting into different size
The pressure-controlled screen hookup of effect.
The technical solution of the utility model is：
A kind of pressure-controlled screen hookup, it is made up of outer tube, screen casing, inner tube, top connection and lower contact, it is characterised in that
The threaded one end of outer tube is provided with top connection, and the other end screw thread of outer tube is provided with lower contact；Between top connection and lower contact
Screen casing is movably installed with outer tube, liquid stream gap is provided between screen casing and outer tube；The termination of screen casing is filled by screen casing fixator
There is sieve tube ball seat；Inner tube is movably installed with screen casing；The termination of inner tube is equipped with inner tube ball seat by interior tube fixer.
Centralizer is separately installed with described top connection and lower contact.
Pressure break hole is evenly equipped with described outer tube circumference, outer tube rail groove is evenly equipped with the outer tube circumference of pressure break hole side.
It is evenly equipped with screen slot on described screen casing circumference, equal screen cloth screen pipe rail groove on the screen casing circumference of screen slot side.
Described screen casing is diameter-changing body, is provided with screen casing track pin at the big footpath of screen casing of screen slot side, screen casing passes through sieve
The cooperation of pipe track pin and outer tube rail groove is slidably connected with outer tube.
It is provided with boss on described outer tube wall, screen casing bullet is set with the screen casing between boss and the big footpath of screen casing
Spring.
Described inner tube is provided circumferentially about projection, is provided with inner tube track pin in projection, inner tube passes through inner tube track
The cooperation of pin and screen casing rail groove is slidably connected with screen casing.
Described projection and with being set with inner tube spring in the inner tube between screen casing path.
Described outer tube rail groove and screen casing rail groove is made up of axial groove and circumferential slot respectively, the termination of multiple axial grooves
Circumferential slot is provided with, axial groove connects with circumferential slot, and axial groove is uniform on outer tube and screen casing circumference, and circumferential slot is annular wave
Shape.
The utility model has the advantage of：
During the pressure-controlled screen hookup work, by putting into the soluble pressure break ball of corresponding specification so that inner tube and screen casing
Moved accordingly by rail groove, realize that acid fracturing is combined with oil recovery machiner sand control, reduce the time of oil gas well mining, carry
High drilling efficiency；When needing that production layer is segmented, or finding that corresponding production layer water yield is big, dimension can be put into
Pressure break ball, make inner tube by rail groove close screen casing, with play layering or control water effect；Pass through rail groove and track pin
Spinning reduction realizes the multiple opening and closing of screen casing.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of outer tube of the present utility model；
Fig. 3 is the structural representation of screen casing of the present utility model；
Fig. 4 is the structural representation of inner tube of the present utility model；
Fig. 5 is the expanded schematic diagram of rail groove of the present utility model.
In figure：1st, outer tube, 2, screen casing, 3, inner tube, 4, top connection, 5, lower contact, 6, spacing preiection, 7, screen casing fixator,
8th, sieve tube ball seat, 9, pressure break hole, 10, outer tube rail groove, 11, centralizer, 12, screen slot, 13, screen casing rail groove, 14, screen casing track
Pin, 15, screen casing spring, 16, raised, 17, inner tube track pin, 18, inner tube spring, 19, interior tube fixer, 20, inner tube ball
Seat, 21, axial groove, 22, circumferential slot.
Embodiment
The pressure-controlled screen hookup is made up of outer tube 1, screen casing 2, inner tube 3, top connection 4 and lower contact 5, one end of outer tube 1
Screw thread is provided with top connection 4, and the other end screw thread of outer tube 1 is provided with lower contact 5；It is separately installed with top connection 4 and lower contact 5
Centralizer 11, with work when the screen casing be in center position.
It is evenly equipped with pressure break hole 9 on the circumference of outer tube 1 of the pressure-controlled screen hookup, on the circumference of outer tube 1 of the side of pressure break hole 9
It is furnished with outer tube rail groove 10.Screen casing 2, the outer tube of the one end of screen casing 2 are movably installed with outer tube 1 between top connection 4 and lower contact 5
The other end termination that the screen casing 2 of spacing preiection 6 is provided with 1 inwall is equipped with sieve tube ball seat 8 by screen casing fixator 7.
The screen casing 2 of the pressure-controlled screen hookup is diameter-changing body, and screen slot 12 is evenly equipped with the circumference of screen casing 2, the side of screen slot 12
Equal screen cloth screen pipe rail groove 13 on the circumference of screen casing 2.Screen casing track pin 14, screen casing 2 are provided with the big footpath of screen casing of the side of screen slot 12
It is slidably connected by the cooperation of screen casing track pin 14 and outer tube rail groove 10 with outer tube 1.
Boss is provided with the inwall of outer tube 1；Screen casing spring 15 is set with screen casing 2 between boss and the big footpath of screen casing.
Inner tube 3 is movably installed with screen casing 2；Inner tube 3 is provided circumferentially about projection 16, and inner tube track is provided with projection 16
Pin 17, inner tube 3 are slidably connected by the cooperation of inner tube track pin 17 and screen casing rail groove 13 with screen casing 2.Projection 16 with
Inner tube spring 18 is set with inner tube 3 between screen casing path；The termination of inner tube 3 is equipped with inner tube ball by interior tube fixer 19
Seat 20.Liquid stream gap is provided between screen casing 2 and outer tube 1.
The outer tube rail groove 10 and screen casing rail groove 13 of the pressure-controlled screen hookup are respectively by axial groove 21 and circumferential slot 22
Form, the termination of multiple axial grooves 21 is provided with circumferential slot 22, and axial groove 21 connects with circumferential slot 22, and the quantity of axial groove 21 is outside
Uniform on pipe 1 and the circumference of screen casing 2, circumferential slot 22 is annular wave（Sawtooth）Shape.
The pressure-controlled screen hookup is followed successively by inner tube 3, screen casing 2, outer tube 1 from the inside to surface.Its working condition is divided into three shapes
State：1. inner tube 3 and screen casing 4 all do not move, screen hookup is generally in sealing state.2. screen casing 2 remains stationary as, inner tube 3 is can
Dissolving, screen casing rail groove 13 and the effect of inner tube spring 18 are moved to the other end of screen casing 2, now screen slot 12 of the inner tube 3 to screen casing 2
Sealing state release, the liquid stream gap that fluid is entered between screen casing 2 and outer tube 1 by the pressure break hole 9 of outer tube 1；Then pass through
The screen slot 12 of screen casing 2 flows into inner tube 3, thus reaches the purpose of sand control oil production.3. put into the pressure break that another large scale can dissolve ball
Ball, screen casing 2 is promoted to move integrally the other end of outer tube 1 together with inner tube 3, now sealing shape of the screen casing 2 to the pressure break hole 8 of outer tube 1
State releases, and exposes pressure break hole 8, you can carries out fracturing work to production layer by the pressure break hole 9 of outer tube 1.
Specially：
When carrying out fracturing work, No. 1 pressure break ball is put into, No. 1 pressure break ball falls in the termination of screen casing 2 under the transport of slurry liquid
Sieve tube ball seat 8, builds the pressure so as to be formed；Slurry liquid produces pressure to No. 1 pressure break ball and sieve tube ball seat 8, and promotes 2 overall edge of screen casing
Outer tube rail groove 10 slides to the other end of outer tube 1；When the screen casing track pin 14 of screen casing 2 slides into the axle of outer tube rail groove 10
During to 21 bottom of groove, under the guide effect of circumferential slot 22, the termination that screen casing track pin 14 is stuck between axial groove 21 is recessed
Portion, now, screen casing 2 are released to the sealing state in the pressure break hole 9 of outer tube 1, and pressure break hole 9 is exposed, you can passes through the pressure break hole of outer tube 1
9 pairs of production layers carry out fracturing work.After the completion for the treatment of fracturing work, well fracturing fluid discharge capacity is added to so that No. 1 pressure break ball and screen casing
Ball seat pressure becomes big, promotes screen casing 2 again, and under the guide effect of circumferential slot 22, screen casing track pin 14 enters phase
Adjacent another axial groove 21, as pressure break hydraulic coupling diminishes, while the also integral reset of screen casing 2 in the presence of screen casing spring 15.
During sand control oil production, No. 2 pressure break balls are put into, No. 2 pressure break balls fall in the inner tube of the termination of inner tube 3 in the transport of slurry liquid
On ball seat 21, built the pressure so as to be formed；Slurry liquid produces pressure to No. 2 pressure break balls and inner tube ball seat 21, and promotes inner tube 3 along screen casing
Rail groove 13 slides to the other end of screen casing 2；When the inner tube track pin 17 of inner tube 3 slides into the axial groove 21 of screen casing rail groove 13
During bottom, under the guide effect of circumferential slot 22, inner tube track pin 17 is stuck in the termination recess between axial groove 21, this
When, inner tube 3 releases to the sealing state of the screen slot 12 of screen casing 2, and screen slot 12 is exposed, and fluid enters sieve by the pressure break hole 9 of outer tube 1
Liquid stream gap between pipe 2 and outer tube 1；Then inner tube 3 is flowed into by the screen slot 12 of screen casing 2, thus reaches the mesh of sand control oil production
's.After the completion of oil recovery, repressurization promotes inner tube 3, and under the guide effect of circumferential slot 22, inner tube track pin 17 enters inner tube 3
Enter adjacent another axial groove 21, as pressure diminishes, while also inner tube 3 resets in the presence of inner tube spring 18.
The pressure-controlled screen hookup is by putting into the pressure break ball of corresponding specification so that inner tube 2 and screen casing 3 pass through rail groove phase
The movement answered, realize that acid fracturing is combined with oil recovery machiner sand control, reduce the time of oil gas well mining, improve drilling well effect
Rate；And the multiple opening and closing of screen casing 2 is realized by the spinning reduction of rail groove and track pin；Solve existing sand control screen to exist
When multiple zone sand control screen or net horizontal section sand control, it is impossible to layering or the flowing of piecewise control production fluid, it is impossible to realize
Layering or segmentation production, cause after oil well produce a period of time after sand control, the production fluid water content of oil well raises, and will influence
The problem of other oil reservoirs normally produce, there is positive dissemination.
Claims (9)
1. a kind of pressure-controlled screen hookup, it is by outer tube（1）, screen casing（2）, inner tube（3）, top connection（4）And lower contact（5）Structure
Into, it is characterised in that：Outer tube（1）Threaded one end top connection is installed（4）, outer tube（1）Other end screw thread be provided with down and connect
Head（5）；Top connection（4）And lower contact（5）Between outer tube（1）Inside it is movably installed with screen casing（2）, screen casing（2）With outer tube（1）It
Between be provided with liquid stream gap；Screen casing（2）Termination pass through screen casing fixator（7）Equipped with sieve tube ball seat（8）；Screen casing（2）Interior activity
It is set with inner tube（3）；Inner tube（3）Termination pass through interior tube fixer（19）Equipped with inner tube ball seat（20）.
A kind of 2. pressure-controlled screen hookup according to claim 1, it is characterised in that：Described top connection（4）Connect with
Head（5）On be separately installed with centralizer（11）.
A kind of 3. pressure-controlled screen hookup according to claim 1, it is characterised in that：Described outer tube（1）On circumference
It is furnished with pressure break hole（9）, pressure break hole（9）The outer tube of side（1）Outer tube rail groove is evenly equipped with circumference（10）.
A kind of 4. pressure-controlled screen hookup according to claim 1, it is characterised in that：Described screen casing（2）On circumference
It is furnished with screen slot（12）, screen slot（12）The screen casing of side（2）Screen casing rail groove is evenly equipped with circumference（13）.
A kind of 5. pressure-controlled screen hookup according to claim 4, it is characterised in that：Described screen casing（2）For diameter-changing body,
Screen slot（12）Screen casing track pin is provided with the big footpath of screen casing of side（14）, screen casing（2）Pass through screen casing track pin（14）With
Outer tube rail groove（10）Cooperation and outer tube（1）It is slidably connected.
A kind of 6. pressure-controlled screen hookup according to claim 3, it is characterised in that：Described outer tube（1）Set on inwall
It is equipped with boss, the screen casing between boss and the big footpath of screen casing（2）On be set with screen casing spring（15）.
A kind of 7. pressure-controlled screen hookup according to claim 1, it is characterised in that：Described inner tube（3）Set on circumference
It is equipped with projection（16）, it is raised（16）On be provided with inner tube track pin（17）, inner tube（3）Pass through inner tube track pin（17）With sieve
Pipe rail groove（13）Cooperation and screen casing（2）It is slidably connected.
A kind of 8. pressure-controlled screen hookup according to claim 7, it is characterised in that：Described projection（16）It is small with screen casing
Inner tube between footpath（3）On be set with inner tube spring（18）.
A kind of 9. pressure-controlled screen hookup according to claim 3 or 4, it is characterised in that：Described outer tube rail groove
（10）With screen casing rail groove（13）Respectively by axial groove（21）And circumferential slot（22）Form, multiple axial grooves（21）Termination set
There is circumferential slot（22）, axial groove（21）And circumferential slot（22）Connection, axial groove（21）In outer tube（1）And screen casing（2）On circumference
Cloth, circumferential slot（22）It is wavy for annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721122572.2U CN207111056U (en) | 2017-09-04 | 2017-09-04 | A kind of pressure-controlled screen hookup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721122572.2U CN207111056U (en) | 2017-09-04 | 2017-09-04 | A kind of pressure-controlled screen hookup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207111056U true CN207111056U (en) | 2018-03-16 |
Family
ID=61574468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721122572.2U Expired - Fee Related CN207111056U (en) | 2017-09-04 | 2017-09-04 | A kind of pressure-controlled screen hookup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207111056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461177A (en) * | 2017-09-04 | 2017-12-12 | 长江大学 | A kind of pressure-controlled screen hookup |
-
2017
- 2017-09-04 CN CN201721122572.2U patent/CN207111056U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461177A (en) * | 2017-09-04 | 2017-12-12 | 长江大学 | A kind of pressure-controlled screen hookup |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20200904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |